Exercise device



FIG. 1 is a perspective view of an exercise device illustrating the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The components of the exercise device shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

What is claimed is the ornamental design for an exercise device, as shown and described. 